Find the order and degree, if defined, of the following differential equation: $y''' + y^2 + e^{y'} = 0$

Order 3, Degree not defined

The correct answer is Option (3) → Order 3, Degree not defined ##

The highest order derivative present in the differential equation is $y'''$, so its order is three. The given differential equation is not a polynomial equation in its derivatives and so its degree is not defined.